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module Puppet::Parser::Functions
newfunction(:is_absolute_path, :type => :rvalue, :arity => 1, :doc => <<-'ENDHEREDOC') do |args|
Returns boolean true if the string represents an absolute path in the filesystem. This function works
for windows and unix style paths.
The following values will return true:
$my_path = 'C:/Program Files (x86)/Puppet Labs/Puppet'
is_absolute_path($my_path)
$my_path2 = '/var/lib/puppet'
is_absolute_path($my_path2)
$my_path3 = ['C:/Program Files (x86)/Puppet Labs/Puppet']
is_absolute_path($my_path3)
$my_path4 = ['/var/lib/puppet']
is_absolute_path($my_path4)
The following values will return false:
is_absolute_path(true)
is_absolute_path('../var/lib/puppet')
is_absolute_path('var/lib/puppet')
$undefined = undef
is_absolute_path($undefined)
ENDHEREDOC
require 'puppet/util'
path = args[0]
# This logic was borrowed from
# [lib/puppet/file_serving/base.rb](https://github.com/puppetlabs/puppet/blob/master/lib/puppet/file_serving/base.rb)
# Puppet 2.7 and beyond will have Puppet::Util.absolute_path? Fall back to a back-ported implementation otherwise.
if Puppet::Util.respond_to?(:absolute_path?) then
value = (Puppet::Util.absolute_path?(path, :posix) or Puppet::Util.absolute_path?(path, :windows))
else
# This code back-ported from 2.7.x's lib/puppet/util.rb Puppet::Util.absolute_path?
# Determine in a platform-specific way whether a path is absolute. This
# defaults to the local platform if none is specified.
# Escape once for the string literal, and once for the regex.
slash = '[\\\\/]'
name = '[^\\\\/]+'
regexes = {
:windows => %r!^(([A-Z]:#{slash})|(#{slash}#{slash}#{name}#{slash}#{name})|(#{slash}#{slash}\?#{slash}#{name}))!i,
:posix => %r!^/!
}
value = (!!(path =~ regexes[:posix])) || (!!(path =~ regexes[:windows]))
end
value
end
end
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